721
FNCA52 TJSJ 150730
FWFSJU
FIRE WEATHER PLANNING FORECAST FOR PUERTO RICO
NATIONAL WEATHER SERVICE SAN JUAN PR
330 AM AST TUE SEP 15 2026
DISCUSSION
NO FIRE DANGER IS EXPECTED TODAY.
PRZ014-152000-
SOUTHEAST COASTAL PLAINS-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 10 20
TEMP (24H TREND) 90 (0) 75 (-2) 91
RH % (24H TREND) 56 (0) 88 (+1) 57
WIND 20FT/EARLY(MPH) E 17 E 13 E 17
WIND 20FT/LATE(MPH) E 18 E 11 E 19
MIXING HGT(FT-AGL/MSL)5330 5430
TRANSPORT WND (MPH) E 16 E 16
VENT RATE (KT-FT) 74620 76020
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ015-152000-
SOUTHERN HILLS-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 60 0 30
TEMP (24H TREND) 88 (+2) 71 (-3) 89
RH % (24H TREND) 62 (-2) 96 (+4) 61
WIND 20FT/EARLY(MPH) E 12 E 12 E 12
WIND 20FT/LATE(MPH) E 13 NE 12 E 13
MIXING HGT(FT-AGL/MSL)5860 6130
TRANSPORT WND (MPH) E 15 E 15
VENT RATE (KT-FT) 76180 79690
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ016-152000-
NORTH COASTAL PLAINS-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 30 40
TEMP (24H TREND) 90 (+1) 74 (-3) 90
RH % (24H TREND) 63 (-4) 98 (+4) 64
WIND 20FT/EARLY(MPH) E 14 E 17 E 13
WIND 20FT/LATE(MPH) E 18 E 13 E 20
MIXING HGT(FT-AGL/MSL)4900 4960
TRANSPORT WND (MPH) E 17 E 17
VENT RATE (KT-FT) 73500 74400
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ017-152000-
NORTHERN HILLS-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 10 60
TEMP (24H TREND) 89 (+2) 72 (-2) 89
RH % (24H TREND) 64 (-3) 98 (+2) 65
WIND 20FT/EARLY(MPH) E 13 E 13 E 12
WIND 20FT/LATE(MPH) E 16 E 11 E 17
MIXING HGT(FT-AGL/MSL)5470 5670
TRANSPORT WND (MPH) E 14 E 14
VENT RATE (KT-FT) 65640 68040
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ018-152000-
WEST COAST-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY MCLEAR PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 70 10 60
TEMP (24H TREND) 92 (+2) 73 (-2) 91
RH % (24H TREND) 61 (-4) 99 (+3) 63
WIND 20FT/EARLY(MPH) E 13 E 11 E 10
WIND 20FT/LATE(MPH) E 13 E 12 E 12
MIXING HGT(FT-AGL/MSL)5000 5000
TRANSPORT WND (MPH) E 10 E 9
VENT RATE (KT-FT) 45000 40000
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ019-152000-
EASTERN INTERIOR-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 30 50
TEMP (24H TREND) 89 (+2) 73 (-2) 89
RH % (24H TREND) 62 (-3) 96 (+3) 64
WIND 20FT/EARLY(MPH) E 12 E 13 E 12
WIND 20FT/LATE(MPH) E 12 E 13 E 13
MIXING HGT(FT-AGL/MSL)6060 6440
TRANSPORT WND (MPH) E 15 E 15
VENT RATE (KT-FT) 78780 83720
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ022-152000-
LUQUILLO MOUNTAIN RANGE-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER MCLDY PCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 50 60
TEMP (24H TREND) 84 (+2) 71 (-3) 84
RH % (24H TREND) 66 (-5) 98 (+3) 68
WIND 20FT/EARLY(MPH) E 10 E 10 E 11
WIND 20FT/LATE(MPH) E 10 E 10 E 11
MIXING HGT(FT-AGL/MSL)4080 3750
TRANSPORT WND (MPH) E 15 E 16
VENT RATE (KT-FT) 53040 52500
DISPERSION 5 5
DSI 6 5 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ023-152000-
CENTRAL MOUNTAIN RANGE-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY CLEAR PCLDY
PRECIP TYPE TSTMS NONE TSTMS
CHANCE PRECIP (%) 70 0 70
TEMP (24H TREND) 86 (+3) 69 (-2) 87
RH % (24H TREND) 67 (-3) 100 (+4) 65
WIND 20FT/EARLY(MPH) E 9 E 9 E 9
WIND 20FT/LATE(MPH) E 9 E 9 E 10
MIXING HGT(FT-AGL/MSL)6280 6490
TRANSPORT WND (MPH) E 12 E 12
VENT RATE (KT-FT) 62800 64900
DISPERSION 5 5
DSI 6 2 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ024-152000-
CAYEY MOUNTAIN RANGE-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 30 40
TEMP (24H TREND) 84 (+1) 72 (-1) 85
RH % (24H TREND) 68 (0) 97 (0) 68
WIND 20FT/EARLY(MPH) E 10 E 10 E 11
WIND 20FT/LATE(MPH) E 11 E 10 E 11
MIXING HGT(FT-AGL/MSL)5270 5130
TRANSPORT WND (MPH) E 16 E 16
VENT RATE (KT-FT) 73780 71820
DISPERSION 5 5
DSI 6 3 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ025-152000-
VIEQUES-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 40 50
TEMP (24H TREND) 89 (+1) 78 (-2) 89
RH % (24H TREND) 58 (-4) 84 (0) 60
WIND 20FT/EARLY(MPH) E 14 E 17 E 14
WIND 20FT/LATE(MPH) E 14 E 17 E 16
MIXING HGT(FT-AGL/MSL)3350 3230
TRANSPORT WND (MPH) E 18 E 17
VENT RATE (KT-FT) 53600 48450
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ026-152000-
CULEBRA-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 50 30 50
TEMP (24H TREND) 90 (+2) 79 (-2) 90
RH % (24H TREND) 61 (-8) 86 (+1) 64
WIND 20FT/EARLY(MPH) E 14 E 16 E 16
WIND 20FT/LATE(MPH) E 14 E 16 E 16
MIXING HGT(FT-AGL/MSL)3460 3210
TRANSPORT WND (MPH) E 18 E 18
VENT RATE (KT-FT) 55360 51360
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
PRZ027-152000-
SOUTHWEST COASTAL PLAINS AND MONA ISLAND-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER MCLEAR MCLEAR MCLEAR
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 10 20
TEMP (24H TREND) 92 (+2) 75 (-2) 91
RH % (24H TREND) 56 (-2) 93 (+7) 56
WIND 20FT/EARLY(MPH) E 16 E 12 E 14
WIND 20FT/LATE(MPH) E 19 E 11 E 18
MIXING HGT(FT-AGL/MSL)5410 5700
TRANSPORT WND (MPH) E 13 E 12
VENT RATE (KT-FT) 59510 57000
DISPERSION 5 5
DSI 6 4 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ001-152000-
SAINT THOMAS AND SAINT JOHN-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS
CHANCE PRECIP (%) 40 40 50
TEMP (24H TREND) 88 (+2) 79 (-1) 87
RH % (24H TREND) 62 (-6) 88 (+3) 65
WIND 20FT/EARLY(MPH) E 16 E 16 E 16
WIND 20FT/LATE(MPH) E 14 E 16 E 17
MIXING HGT(FT-AGL/MSL)3440 3180
TRANSPORT WND (MPH) E 18 E 20
VENT RATE (KT-FT) 55040 54060
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
VIZ002-152000-
ST CROIX-
330 AM AST TUE SEP 15 2026
TODAY TONIGHT WED
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS TSTMS
CHANCE PRECIP (%) 30 50 60
TEMP (24H TREND) 88 (+1) 79 (-1) 88
RH % (24H TREND) 64 (-4) 89 (+2) 67
WIND 20FT/EARLY(MPH) E 16 E 16 E 14
WIND 20FT/LATE(MPH) E 14 E 16 E 17
MIXING HGT(FT-AGL/MSL)4980 4160
TRANSPORT WND (MPH) E 20 E 20
VENT RATE (KT-FT) 84660 70720
DISPERSION 5 5
DSI 6 6 6
RH RECOVERY EXCELLENT
REMARKS...NONE.
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